add Kind() method to datatype.T interface and to config parameter

datatype/builtin/any.go

@@ -1,10 +1,19 @@
 package builtin
 
-import "git.xdrm.io/go/aicra/datatype"
+import (
+	"reflect"
+
+	"git.xdrm.io/go/aicra/datatype"
+)
 
 // AnyDataType is what its name tells
 type AnyDataType struct{}
 
+// Kind returns the kind of data
+func (AnyDataType) Kind() reflect.Kind {
+	return reflect.Interface
+}
+
 // Build returns the validator
 func (AnyDataType) Build(typeName string, registry ...datatype.T) datatype.Validator {
 	// nothing if type not handled

datatype/builtin/bool.go

@@ -1,10 +1,19 @@
 package builtin
 
-import "git.xdrm.io/go/aicra/datatype"
+import (
+	"reflect"
+
+	"git.xdrm.io/go/aicra/datatype"
+)
 
 // BoolDataType is what its name tells
 type BoolDataType struct{}
 
+// Kind returns the kind of data
+func (BoolDataType) Kind() reflect.Kind {
+	return reflect.Bool
+}
+
 // Build returns the validator
 func (BoolDataType) Build(typeName string, registry ...datatype.T) datatype.Validator {
 	// nothing if type not handled

datatype/builtin/float.go

@@ -2,6 +2,7 @@ package builtin
 
 import (
 	"encoding/json"
+	"reflect"
 
 	"git.xdrm.io/go/aicra/datatype"
 )
@@ -9,6 +10,11 @@ import (
 // FloatDataType is what its name tells
 type FloatDataType struct{}
 
+// Kind returns the kind of data
+func (FloatDataType) Kind() reflect.Kind {
+	return reflect.Float64
+}
+
 // Build returns the validator
 func (FloatDataType) Build(typeName string, registry ...datatype.T) datatype.Validator {
 	// nothing if type not handled

datatype/builtin/int.go

@@ -3,6 +3,7 @@ package builtin
 import (
 	"encoding/json"
 	"math"
+	"reflect"
 
 	"git.xdrm.io/go/aicra/datatype"
 )
@@ -10,6 +11,11 @@ import (
 // IntDataType is what its name tells
 type IntDataType struct{}
 
+// Kind returns the kind of data
+func (IntDataType) Kind() reflect.Kind {
+	return reflect.Int
+}
+
 // Build returns the validator
 func (IntDataType) Build(typeName string, registry ...datatype.T) datatype.Validator {
 	// nothing if type not handled

datatype/builtin/string.go

@@ -1,6 +1,7 @@
 package builtin
 
 import (
+	"reflect"
 	"regexp"
 	"strconv"
 
@@ -13,6 +14,11 @@ var variableLengthRegex = regexp.MustCompile(`^string\((\d+), ?(\d+)\)$`)
 // StringDataType is what its name tells
 type StringDataType struct{}
 
+// Kind returns the kind of data
+func (StringDataType) Kind() reflect.Kind {
+	return reflect.String
+}
+
 // Build returns the validator.
 // availables type names are : `string`, `string(length)` and `string(minLength, maxLength)`.
 func (s StringDataType) Build(typeName string, registry ...datatype.T) datatype.Validator {

datatype/builtin/uint.go

@@ -3,6 +3,7 @@ package builtin
 import (
 	"encoding/json"
 	"math"
+	"reflect"
 
 	"git.xdrm.io/go/aicra/datatype"
 )
@@ -10,6 +11,11 @@ import (
 // UintDataType is what its name tells
 type UintDataType struct{}
 
+// Kind returns the kind of data
+func (UintDataType) Kind() reflect.Kind {
+	return reflect.Uint
+}
+
 // Build returns the validator
 func (UintDataType) Build(typeName string, registry ...datatype.T) datatype.Validator {
 	// nothing if type not handled

datatype/types.go

@@ -1,5 +1,7 @@
 package datatype
 
+import "reflect"
+
 // Validator returns whether a given value fulfills a datatype
 // and casts the value into a compatible type
 type Validator func(value interface{}) (cast interface{}, valid bool)
@@ -8,5 +10,6 @@ type Validator func(value interface{}) (cast interface{}, valid bool)
 // definition does not match this T ; the registry is passed for recursive datatypes (e.g. slices, structs, etc)
 // to be able to access other datatypes
 type T interface {
+	Kind() reflect.Kind
 	Build(typeDefinition string, registry ...T) Validator
 }

internal/config/service.go

@@ -238,6 +238,7 @@ func (svc *Service) validateInput(types []datatype.T) error {
 			param.Validator = dtype.Build(param.Type, types...)
 			if param.Validator != nil {
 				datatypeFound = true
+				param.Kind = dtype.Kind()
 				break
 			}
 		}

internal/config/types.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"net/http"
+	"reflect"
 
 	"git.xdrm.io/go/aicra/datatype"
 )
@@ -26,7 +27,6 @@ type Service struct {
 	Scope       [][]string            `json:"scope"`
 	Description string                `json:"info"`
 	Input       map[string]*Parameter `json:"in"`
-	// Download    *bool                 `json:"download"`
 	// Output      map[string]*Parameter `json:"out"`
 
 	// references to url parameters
@@ -46,6 +46,8 @@ type Parameter struct {
 	Description string `json:"info"`
 	Type        string `json:"type"`
 	Rename      string `json:"name,omitempty"`
+	// Kind of data the datatype returns
+	Kind reflect.Kind
 	// Optional is set to true when the type is prefixed with '?'
 	Optional bool